45229309 has 2 divisors, whose sum is σ = 45229310. Its totient is φ = 45229308.

The previous prime is 45229307. The next prime is 45229313. The reversal of 45229309 is 90392254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45024100 + 205209 = 6710^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 45229309 - 2¹ = 45229307 is a prime.

Together with 45229307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45229307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22614654 + 22614655.

It is an arithmetic number, because the mean of its divisors is an integer number (22614655).

Almost surely, 2^45229309 is an apocalyptic number.

It is an amenable number.

45229309 is a deficient number, since it is larger than the sum of its proper divisors (1).

45229309 is an equidigital number, since it uses as much as digits as its factorization.

45229309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 45229309 is about 6725.2738977680. The cubic root of 45229309 is about 356.2924757398.

It can be divided in two parts, 4522 and 9309, that added together give a palindrome (13831).

The spelling of 45229309 in words is "forty-five million, two hundred twenty-nine thousand, three hundred nine".